​Vudu has announced its users can now "loan" their digital movie and TV collections to as many as five friends with the new Share My Movies service, but it's easier for those who haven't used Vudu before.

So you bought a new 4K TV and you're wondering what's on. The answer right now is: not much. But the list is growing. Here's a look at what you can watch now in 4K, and what's coming down the pike in the near future.